Gemstone



FIG. 1 is a top view of an exemplary embodiment of a gemstone showing my new design;

FIG. 2 is a front side view of the gemstone of FIG. 1;

FIG. 3 is a left side view of the gemstone of FIG. 1; and,

FIG. 4 is a perspective view of the gemstone of FIG. 1.

The broken lines are provided for illustrative purposes only, and form no part of the claimed design. In addition, the portions of the gemstone that are not shown in the drawing do not form any part of the claimed design. 

The ornamental design of the gemstone, as shown and described. 